I call it the smash game challenge! what does this entail? for every fighter on the smash roster you play one game that stars them to completion. for reference I'll go down the list

mario: any mario game will do jsut play until bowser is defeated

donkey kong/diddy kong/king K. rool: play three donkey kong games, obviously donkey kong stars in all of them, you can play as diddy in some of them, and I know you can't play as K rool so for play one of the games that has him as the antagonist

link: the link in smash ultimate is from breath of the wild so I reccommend that one

samus/ridley/dark samus/zero suit samus: play 4 metroid games, one where you play as samus in thezero suit, one with ridley as the antagonist, one with dark samus as the antagonist, and the original, or one where you play as vanilla samus

yoshi: any yoshi's island game will do

kirby/dedede/,meta knight: play three kirby games, these three are in pretty much all of them, I'm pretty sure star allies is the only one where you can play as deded so I reccommend playing that for him, and for the other two it doesn't really matter just makes sure meta knight is IN one of them, espescially if he's playible

fox/wolf/falco: play three star fox games, I know you don't play as wolf in any of them and I'm not sure about falco, but play one where wolf is the antagonist and if it exists one where you play as falco

the pokemon: if you count pokemon trainer as one (which let's do so to be nice) there are 8 pokemon characters, there are also 8 generations of pokemon games so play one game from each generation up until you beat the champion

luigi: play luigi's mansion, preferibly the first because it's the shortest

ness/lucas: play the first two earthbound games (or undertale if you by into certain theories)

capitan falcon: play F-0

peach: I know there is at least one mario game where you can play as peach, I don't remember what it's called but there you go

daisy: the only cannon mario games that Daisy appears in is in super mario land for the game boy. if an emulator is needed it is acceptible

bowser: I'm pretty sure there is a mario RPG game where you can play as him. if not just about any mario game will do

ice climbers: ice climbers

sheik: ocarina of time

zelda: apparently the one we see in ultimate is the one from a link between worlds so play that one

dr mario: dr mario

the fire emblem bois: okay so as far as I know each fire emblem game is completely different from each other. so for this one play a different fire emblem game that represents each fighter. however I'm also pretty sure that crhom, lucina, and robin are all from the same game so I'm going to need a fire emblem fan to set the rules for these guys, if there are any fire emblem fans that can help let me know

young link: according to the wiki this is link from a hero in time so play that one for young link

ganondorf: so apparently the ganondorf in smash ultimate is the occarina of time one, so to avoid overlap lets just say... twilight princess, like his smash 4 incarnation

mr game and watch: okay so the game and watch games are all minigames so jsut play a few of those (on an emulator if you have to) and you're golden

pit/dark pit/palutena: so if I remember correctly there are exactly 3 kid icarus games, so just play em all

wario: this could be another game and watch case, or you could play one of the wario land games and get the same effect

snake: metal gear solid

sonic: any sonic game it really doesn't matter

olimar: either pikmin 1 or 2 since he's not playible in 3 (you could play hey pikmin if you remember that game exists)

R.O.B: okay this is a wried one because R.O.B is a console and the only time he is a playable character is in mario kart DS. so I guess just win a round of mario kart DS on the highest difficulty, playing as R.O.B ( hear he's one of the best characters in that game anyway)

toon link: windwaker

villager and isobelle: play two animal crossing games to the end

mega man: it really doesn't matter wich one

wii fit trainer: okay this one is another wired one, I say for this, set a fitness goal for yourself and reach it using wii fit, it can be something simple like lose half a pound, or something like that

rosalina: play any one of the three super mario galaxy games

the mii fighters: play three of the mii games (like wii sports for example)

pac man: this pac man seems to be the one from the more story driven console games, so play one of those, or play the original aracde game to level 5 without losing all of your lives

shulk and pyra: play xenoblade chronicles 1 and 2

bowser jr: he made his intro in super mario sunshine so try that (the new super mario bros games are also acceptible)

duck hunt: pull out the emulator for this one

ryu/ken/kazuya/terry/min min: so these guys as far as I know are from fighting games that don't have story modes. if they have a story mode play them as their respective characters, if not play agaisnt all other characters on the highest difficulties possible

cloud/sepheroth/sora: so to my knowledge cloud is only in final fantasy seven and sepheroth is only in final fantasy seven and one of the kingdom hearts games, so to keep it simple, play final fantasy 7, the final fantasy 7 remake, and one of the kingdom hearts games

bayonetta: play a bayonetta games

inkling: I'm not sure if there is a story mode for splatoon, if there is play it if not... I'll need the help of an inkling fan for that

simon and richter: play the two castlevainia games that star them

pirhanna plant: another wired case, the only time you can play as pirhanna plant is in the spirts games, so I guess just play one of those or any mario game that features them as antagonists

joker: persona 5

hero: there are 4 different heros in smash so pick one of the dragon quest games that corresponds to one of them

steve: play minecraft up until you defeat the enderdragon

and that's it. good luck to any gamer that attepts this. I'm sure this will take like a year for somebody to actually beat this. but the game is on for anyone to attempt. good luck